This guide helps with GN4 tags (markup language). It is aimed for style designers, and any other staff who creates and maintains text formatting.
The Configuring GNML chapter introduces you to the GNML text formatting language, with an overview, description of syntax rules, and the other properties of this language.
The GNML tags reference chapter lists GNML built-in tags and variables by name and type, and then describes every tag with purpose, parameters and typographical expressions, tag effects, type and scope, examples, related dialog boxes and tool bars, built-in commands and scripts, and VB.NET objects, where available.
The User defined tags chapter contains description of some elementary additional tags and styles.
Use the Table of Contents to find information. See also Using table of contents in help.